function res = fn_F2(n, k, vk, vFT, ck, cP, cQ, ck_dH, cu_dH)

Num = length(cP);
res = fn_int_an(n, vk, vFT, k);

for m = 1:Num
    
    [tk, tf] =  fn_combine(ck{m}, cP{m}, cQ{m}, ck_dH{m}, cu_dH{m});
    res = res + fn_int_Tnm(n, m, tk, tf, k); 
    
end

end